HR7551 is a variable hypergiant star in the constellation of Cygnus.
HR7551 visual magnitude is 6.44. Because of its reltive faintness, HR7551 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.
The table below summarizes the key facts about HR7551:
Celestial coordinates and finder chart of HR7551
HR7551 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR7551 are provided in the following table:
The simplified sky map below shows the position of HR7551 in the sky:
Visibility of HR7551 from your location
Digitized Sky Survey image of HR7551
The image below is a photograph of HR7551 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR7551 is 0.007 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.
Distance of HR7551 from the Sun and relative movement
HR7551 is distant 2,217.69 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.
Spectral properties of HR7551
HR7551 belongs to spectral class B0 and has a luminosity class of I corresponding to a hypergiant star.
The red dot in the diagram below shows where HR7551 is situated in the Hertzsprung–Russell diagram.